What are motor skills?
A motor skill is a function, which involves the precise movement of muscles with the intent to perform a specific act.
Most purposeful movement requires the ability to "feel" or sense what one's muscles are doing as they perform the act. Motor difficulties occur when an individual lacks the ability to move in the way he or she originally intended. This can have a significant effect on classroom performance and motivation in school.
(taken from - https://www.educlime.com/wharemosk.html)